Check the listing for details. Cavision 3x3 Matte Box Package with 80mm Adapter Ring (+ Top & Side Flaps). Condition: Open box. Listed at 84.00 USD. Key Features:Includes 80mm Adapter Ring (ARP380) to clamp onto lenses with 80mm front outside diameter (such as some Zeiss and Samyan cine lenses)Has a special back-mount that allows the use of other ARP3 series plastic insert step-down rings (not included)Specifications:Filter trays: 2 total, 1 rotatableDegree of rotation: 270oFilter size: 3x3" glass or resin (max thickness of 4mm) in filter trays; cokin "P"filters fit loosely in filter stage slots only (not in filter trays)Back mount opening: Ø85mmFit Lens filter thread: 82, 77, 72, 62, 67, 58 & 52mm (*with appropriate adapter ring)Fit DSLR lens wide angle: APS-C: 15mm & up. Full frame: 35mm & up (may work at wider angles on lenses with less than 77mm filter diameter; may also work on wider lenses if clamped directly on lens front)Construction: Aluminum & ABSFilter tray material: ABSHard Shade Material: ABSDimensions: 17.2 X 13 X 6.8 cmWeight: 360g (matte box = 180g; top flap = 100g; pair of side flaps = 80g) When purchasing multiple items, please contact Cavision before payment for combined shipping rates.